Hi @johnny , some of my grids are exporting in php 8.1 some of them not. I guess is because the grids that are not exported contains a date field. here are my findings: grep -r --include=“*.php” strftime . ./scoumbourdis/phpexcel/Classes/PHPExcel/Calculation/DateTime.php: …

Add functionality does not work. On Edit, fields are filled ok but if I change the parent children have the same values. My assumption is because of the last parameter, I tried various options without success… Do we have an workaround?